baber/WOPTO huggingface dataset:
Patent GB-811870-A (GB)
Title: Preparation of para-nitrobenzoic acid
Inventor: MAYURNIK GEORGE
IPC: C07C205/57
Filed: 1956-06-21
Abstract: Para-nitrobenzoic acid is prepared by the oxidation of para-nitrotoluene which may be alone or in admixture with its ortho- and metaisomers, with a gas consisting of or containing free oxygen in the presence of up to 60 per cent nitric acid.  The molar ratio of nitric acid (based on 100 per cent nitric acid) to p-nitrotoluene may vary from 1 to 10.  Any pressure above the vapour pressure of water at the prevailing temperature is suitable for the reaction.  The preferred temperature range is 140-210 DEG  C., and the preferred oxygen containing gas is air, although pure oxygen, as well as any oxygen-containing mixture of gases may be used so long as the other components are inert with respect to the reaction.  It is preferable to introduce large quantities of oxygen at a fast rate at the beginning of the reaction and to decrease the rate towards the end of the reaction.  The reaction may be carried out batchwise or continuously.  At the end of the reaction the unreacted nitrotoluene may be distilled from the reaction mass and water introduced to replace that lost during distillation.  The distillation residue may then be filtered and the filtrate boiled with water, cooled, filtered and dried to give the pure para-nitrobenzoic acid.  Examples are given.
Patent GB-515767-A (GB)
Title: Improvements in, and relating to, axes, hatchets, and the like
IPC: B26B23/00
Filed: 1938-06-29
Abstract: 515,767. Handles. CHILLINGTON TOOL CO., Ltd., and HUNT, B. E. June 29, 1938, No. 19242. [Class 61 (i)] An. axe, hatchet &c. A particularly for use by firemen or in aircraft has the tang B covered with material C which is a non-conductor of electricity and may also be a fire resisting material. For example a synthetic plastic material may be applied to the tang under pressure and heat in suitable dies or a sheath of hard rubber may be moulded and vulcanized on the tang.
Patent GB-147214-A (GB)
Title: Improvements in or relating to electrical generating units having an internal combustion engine as the prime-mover
IPC: F02B63/04
Filed: 1920-07-07
Abstract: 147,214. Sham berg, H. D. July 9, 1919, [Convention date]. Casings; dynamos, driving.-In an electric generating-plant comprising a dynamo 8 and engine, 3, the engine cylinder 1 is cooled by water circulating through it and a radiator 11 and tank 16 by pipes 15, 17. Vertical sheet-metal plates with louvered openings form with the tank 16 a casing enclosing the cylinder and fan 19. A fuel tank 25 is mounted on a bracket 24 and a board 27 serves to support electrical instruments.
Patent GB-834895-A (GB)
Title: Polymerisation process
IPC: C08F10/00
Filed: 1956-08-17
Abstract: Isobutylene is polymerized at a temperature below - 40 DEG  C. in the presence of from 0.001 to 0.01% by weight of a solid metal halide catalyst dissolved in a non-complex forming, non-freezing solvent, while maintaining a conversion level of 50 to 60%. Catalysts may be selected from aluminium chloride and bromide, stannous and zirconium chloride dissolved in a solvent such as methyl chloride.  A 10% by weight feed of isobutylene polymerized with a catalyst concentration of 0.003 to 0.004% based on the solvent at a temperature of - 100 DEG C. yields 88% of polyisobutylene of Staudinger molecular weight above 250,000.
Patent GB-508742-A (GB)
Title: Process for the preparation of new water-soluble dyestuffs of the anthraquinone series
IPC: C09B3/10
Filed: 1938-06-30
Abstract: 508,742. Dyes. CHEMICAL WORKS, FORMERLY SANDOZ. June 30, 1938, No. 19465. Convention date, July 13, 1937. [Class 2 (iii)] Compounds of the formula where X is hydrogen or an amino, alkylamino, alkylolamino or arylamino radicle and in which the arylamino-, anthraquinone-, and benzanthrone-radicles may be substituted but must not contain aroylamino . groups, are treated with sulphonating agents. Substituents specified are halogen, cyano; hydroxy, alkoxy, phenoxy and alkyl. The sulphonation may be carried out with oleum or chlorsulphonic acid, if desired in presence of boric acid or mercury salts, or by replacement of halogen atoms by heating with alkali sulphites in solvents such as phenol. The products dye wool grey, reddish-brown, or yellow shades. The starting materials are made by condensation of an aminoanthraquihone with a Bz-hatogenbenzanthrone or a halogenanthraquinone with a Bz-aminobenzanthrone. In examples, the. following bodies are treated with sulphonating agents : (1) 1-(Bz. 1-benzanthronylamino) anthraquinone itself and its substitution products containing in 4-position of the anthraquinone nucleus the following radicles : (a) anilido-,-(b) o or p-toluido-, (c) p-acetamidoanilido-, (d) m- or p-chloranilido-, (e) 2.5- dichloranilido-, (#) p-aminoanilido-, (g) pphenylanilido-, (h) 2:5-dimethylanilido-, (i), mesidino-, (j), alpha- or, #-naphthylamino-, (k) amino-, and (l), ethanolamino ; (2) 1.-(Bz.1- benzanthronylamino) anthraquinones containing in 5-position a p-toluido, an amino, or a methylamino group;. (3) 1.4-anilido-Bz. 1- (6-brom- or 2-methyl-benzanthronylamino)- anthraquinone ; (4) 1.4-anilido-Bz:2-benzanthronylamino-anthraquinone. Also in examples, 1.4-anilido-Bz.1-(6-brombenzanthronylamino)-2 bromanthraquinone is reacted with potassium sulphite in phenol.
Patent GB-1012711-A (GB)
Title: Improvements in or relating to surface testing apparatus
Inventor: REASON RICHARD EDMUND
IPC: G01B5/28
Filed: 1961-05-30
Abstract: 1,012,711. Gauging surfaces. RANK PRECISION INDUSTRIES Ltd [trading as TAYLOR, TAYLOR & HOBSON]. May 30,1962 [May 30, 1961], No. 19465/61. Heading G1M. Departure from circularity in a workpiece is measured by a stylus E 1  of a pick-up head E (electromagnetic, electrostatic or piezoelectric) which is carried on a bracket D and which explores the workpiece surface as the spindle A, to which bracket D is adjustably clamped, rotates. Spindle A is held in bearings on the underside of the worktable support B<SP>1</SP> and the base-part B<SP>2</SP> and is driven by a motor through a selectively variable (using knob B<SP>3</SP>) reduction gear box including a friction-wheel and disc for continuous variation according to the size of workpiece. In this way, a constant peripheral speed of the stylus may be obtained so that consistent readings will be obtained on an integrating meter optionally connectable to the pick-up to give the average surface roughness. Limit switches carried (within the housing B<SP>4</SP>) by the rotating spindle A co-operate with adjustable pins G<SP>1</SP> and G<SP>2</SP> to limit the arc of stylus movement. The stylus is finely adjustable in the mounting-block D<SP>1</SP> by a screw D<SP>3</SP>, the block D<SP>1</SP> being itself movable in a guideway for coarse adjustment. The workpiece i s centred with respect to the spindle axis using a notched locating plate C<SP>2</SP>, adjustable in two-dimensions by screws C<SP>4</SP> and C<SP>5</SP>, and a microscope F; the worktable C is supported at three points on sliding pads. In making measurements, two different speeds of rotation of spindle A may be used to give error graphs corresponding to fine and coarse surface structure. For 'average' measurements a cam shaft is connected via a clutch, with the spindle drive for sequentially operating switches to connect in the integrating meter and then to disconnect the clutch after a pre-determined stylus movement. Disconnection of the cam-shaft from the spindle drive for normal measurements returns the integrating meter to zero. For measurements on internal concave surfaces, a stylussupporting bracket as shown in Fig. 8 is used. Specifications 716,719 and 1,012,712 are referred to.
Patent GB-681323-A (GB)
Title: Device for the dust-free emptying of refuse pails into refuse collecting vehicles
Inventor: OCHSNER JAKOB
IPC: B65F3/12
Filed: 1950-08-03
Abstract: 681,323. Loading vehicles. OCHSNER & CIE, A.KT.-GES., J. Aug. 3, 1950. No. 19472/50. Class 78 (iv). In the dust-free emptying of refuse bins a spring urged hook on the vehicle closure covering the bin engages the lid handle and removes the lid during emptying of the bin. A carrier 3 for a refuse bin 4 is pivotally mounted on a spindle 2 on the vehicle. The carrier has a ring 5 and U-shaped guides 6 for rails 8, the rails having a cross member 9 on which the bin is placed to rest on a hook 10 A cable for lifting the bins and carrier passes round a roller on an extension of the member 9. A cover 17 for the vehicle refuse opening is hinged at 15 to the ring 5 and at 16 to the vehicle. The cover comprises members 18, 19 hinged together at 20. A hook 22 is mounted on the post 18 and is spring urged to secure a handle 30 on the bin lid. The spindle of the hook carries a plate 24 the hook being kept inoperative by a member 26 on the carrier. On tipping the bin the hook secures the lid handle as the hinged members are moved to open the vehicle refuse opening. In a modification the pail is suspended by a ring fixed to the upper ends of the rails 8 the ring bearing upon the flange 40 of the bin. In a further modification the pail is lifted by curved levers rotatably secured to T-shaped guides and engaging rollers on U-shaped rails.
Patent GB-274896-A (GB)
Title: Improvements in or relating to elastic fluid turbines
IPC: F01D11/04
Filed: 1927-07-22
Abstract: 274,896. British Thomson-Houston Co., Ltd., (Assignees of Junggren, 0.). July 23, 1926, [Convention date]. Stuffing-boxes, substitutes for.-The casing 12 of the impeller 13 of a water packing for a turbine shaft 2 is supported independently of the turbine shell 1, and is free to contract and expand both radially and axially. A radially yieldable support is provided by an annular axiallyextending wall 15 secured at one end to a cover plate 9 for bearing 6. Surrounding the casing 12 is a seal comprising a wall 16 with a flexible portion 17 permitting radial expansion of the casing 12. A high-pressure packing 11 of the labyrinth or other suitable type is located on the turbine side of the water packing casing 12. A packing 10 prevents oil from the bearing leaking along the shaft.
Patent GB-223672-A (GB)
Title: Improvements in and relating to appliances for purifying and moistening air
IPC: F24F3/12
Filed: 1923-07-30
Abstract: 223,672. St÷hr, M. July 30, 1923. Air, moistening and washing.-Air for rooms is washed and moistened by passage through tubes 4 located in a heating appliance Z and leading to a water chamber 5 having a ribbed or corrugated roof. The air is discharged through perforations under covers 18 over the surface of the liquid, and the impurities deposited on the surface pass through slots 20 in the tubes 4 and descend to a collecting vessel 16. The air then passes through a series of tubes 6 in a second chamber 7, and is discharged over water therein. From this chamber, water drips through the tubes 6 on to the covers 18 and, being vaporized. further moistens the air, finally condensing against the cooled top of the chamber 5 and' falling back into the water in a shower. The moistened air escapes directly into the atmosphere or through tubes 8 in a water chamber 9. Modifications for use with stoves and central heating apparatus are also described.
Patent GB-236404-A (GB)
Title: Improvements in stoking boiler and other furnaces
IPC: F23K3/00
Filed: 1924-09-17
Abstract: 236,404. Shields, T., (Pickles, V.). Sept. 17, 1924. Fuel, feeding. - Fuel feeding apparatus, of the kind in which the fuel is separated into its fine and coarse constituents which are fed gravitationally on to a mechanical grate so that the fine. particles form a layer over the coarses pieces, is combined with an adjustable feeding device located in the supply shoot A and comprising a rotary cylinder B and a vertically adjustable plate C. The fuel, after passing the roller B, is delivered to a revolving trommel E from which the fine and coarse particles falls into separate compartments of a hopper F beneath which is arranged a shoot H also divided into @ elements by a screen or plate E'. The shoot H is pivotally mounted at K so that it may be swung to distribute the fuel evenly over the whole width of the divided grate hopper J. The roller B, trommel E, and shoot H may be driven from the grate-operating mechanism. The trommels may be omitted and the screen E<1> alone relied on. In a further modification the shoot H is omitted and a number of revolving trommels are arranged to deliver the fine and coarse fuel directly to the respective compartments of the grate hopper J.
Patent GB-772113-A (GB)
Title: Method of and solution for coating steel and zinc surfaces
Inventor: SCHNEIDER GEORGE
IPC: C23C22/14
Filed: 1955-07-06
Abstract: An aqueous solution for applying a crystalline zinc phosphate coating to steel and zinc surfaces contains phosphoric acid, zinc, chlorate, and nickel and/or cobalt, the zinc being present from 0.2-0.4 per cent W/V., the ratio of free to total acid being 1:7.5-1:10.0, the ratio of phosphate to chlorate being 1.0.28-1:1.10, and the nickel and/or cobalt being present in not less than 1 equivalent of the metal per 100 equivalents of zinc. The temperature of employment is preferably 145 DEG -165 DEG F.  Solutions containing zinc oxide, phosphoric acid, nickel carbonate and sodium chlorate are given by way of example, it being stated that the nickel carbonate may be replaced by nickel nitrate, cobalt nitrate or cobalt carbonate. Specification 672,367 is referred to.
Patent GB-1308274-A (GB)
Title: Fast curing organo siloxane resins
IPC: C08G77/24
Filed: 1971-06-09
Abstract: 1308274 Fluoropropyl polysiloxanes DOW CORNING CORP 9 June 1971 [9 July 1970] 19656/71 Heading C3T An organopolysiloxane resin has a ratio of organic radicals to Si atoms of 0À95-1À7 : 1, the organic radicals, or which at least 70% are 3,3,3-trifluoropropyl radicals, being monovalent hydrocarbon or halohydrocarbon radicals, and terminates in units R<SP>1</SP>(HO) 2 SiO 0À5  (replacing original OH groups) wherein at least 75% of the radicals R<SP>1</SP> are methyl radicals, any others being C 2-6  alkyl, vinyl, phenyl, or trifluoropropyl radicals, and contains 0À05-0À5 units per 100 gms. of original resin and no OH groups other than in the dihydroxysiloxy units. It is prepared by reaction of an organopolysiloxane resin having organic radicals as defined above and containing 1-8À5 wt. per cent of Sibound OH groups with sufficient silane R<SP>1</SP>SiX 3  to react with all the OH groups, where R<SP>1</SP> is as above and X is Cl or -O.CO.CH 3 , in solution in at least 20 wt. per cent concentration, and hydrolysis of the product. In Examples 1 and 2, trifluoropropyl trichlorsilane is cohydrolysed with trifluoropropyl methyl dichlorsilane, with and without vinyl trichlorsilane in methylene chloride/water; the products contain 2% and 3À5% by weight of OH groups; to these are added methyl trichlorsilane or methyl triacetoxysilane and pyridine, followed by water after the initial reaction. The products are curable by heat.
Patent GB-836926-A (GB)
Title: Improvements in or relating to face cam mechanisms
Inventor: JENKINS RHONALD FRANK
IPC: G04B23/02
Filed: 1957-06-21
Abstract: 836,926. Cam mechanisms. SMITH & SONS (ENGLAND) Ltd., S. June 13, 1958 [June 21, 1957], No. 19666/57. Class 80 (3). [Also in Group XVIII] In a face cam mechanism particularly for the alarm mechanism of clocks a cam member 17 has two or more projections 33 co-operating with two or more corresponding recesses 30 in a follower member 24. The projections and recesses are arranged asymmetrically so that the projections move into the recesses only once per revolution of the cam member. Specification 830,050 is referred to.
Patent GB-147710-A (GB)
Title: Improvements in motive power appliances for sewing machines and the like
IPC: D05B69/18
Filed: 1920-07-08
Abstract: 147,710. Lustig, D., (Assignee of Dross. ner, H.). July 12, 1919, [Convention date]. Sewing - machines; driving.-An electric motor is mounted on a telescopic standard 3, 7 the parts of which are connected by a pin and curved slot 8, 9. When the motor table is depressed against the upward pressure of a spring in the standard, the motor is swung round and its pulley 16 is brought into driving engagement with the machine wheel 17. At the same time, the motor switch 20 is closed by means of a rod 22 pivoted upon the stationary part of the telescopic standard. The whole standard can be adjusted vertically, and is locked by screws 6.
Patent GB-627300-A (GB)
Title: Improvements in or relating to gill drawing frames
IPC: D01H5/10
Filed: 1946-07-03
Abstract: 627,300. Gill boxes. SCARANI, R. July 3, 1946, No. 19934. Convention date, April 2, 1943. Addition to 626,953. [Class 120 (i)] In a gill box as claimed in the parent Specification, the fallers 1, immediately prior to their entry into and discharge from the working path are engaged by supplementary supporting means in the form of wheel like devices rotating in synchronism with the wheels affecting the feeding of the falters. In their ascent to the working path the fallers I are supported by curved shoes 5<SP>1</SP> of star wheels 5, one at each side of the machine and are moved horizontally by the engagement of their projections 8 with inclined guides 9. The falters are fed along the working path by wheel 4 and during discharge from the working path are engaged by notches 6<SP>1</SP> in a cam 6 similar to a Geneva wheel and during descent rest upon surfaces 611 of the, notches. Gear wheels connect the cam 6 to a wheel 41 controlling the discharge of the fallers and star wheel 5 to the feed wheel 4.
Patent GB-979965-A (GB)
Title: Plug for electric detonators and its manufacturing process
IPC: F42B3/12
Filed: 1962-05-24
Abstract: 979,965. Electric blasting detonators. U.M.A.L. S.A. May 24, 1962 [June 2, 1961], No. 19941/62. Heading F3A. A plug, which is used to close the casing 1 of an electric detonator and carry the electrodes 7, 8, is manufactured by removing the centre part of a thin metal sheet to form two parallel limbs united by a web 13 in which is a tapered recess 10 and embedding the web 13 with adjoining portions of the limbs in a cylindrical mass 12 of insulating material, e.g. artificial resin, in such a way that the edge of web 13 is flush with a surface of the mass 12 and lies along a diameter. The surface S, Fig. 4, is then ground or milled to remove the material to a level X-Y, where a gap of predetermined width separates the electrodes. By connecting the limbs 7, 8 in circuit with a pilot lamp 14, Fig. 6, the lamp is extinguished to give a warning when level X-Y has been reached. Instead of lamp 14, a relay may be used to control the driving motor of the grinding machine, so that the drive stops immediately the electrodes 7, 8 are disconnected from each other. The grinding process may be carried out in two stages, the first stage being at a higher rate than the second. The finished plug is crimped in the casing 1 above the detonator charges 2, 3, 4 and the electrodes may be bridged by a layer of graphite.
Patent GB-578603-A (GB)
Title: Improvements in and relating to the manufacture of low density cellular materials from paper, fabric or the like
IPC: B31D5/00
Filed: 1943-11-30
Abstract: 578,603. Compound sheet materials. PLASTICRETE HOLDINGS, Ltd.. WADE, C. G., and AMIGO, A. Nov: 30, 1943; No. 19982. [Classes. 96 and 140] [Also in Groups X and XXI] Cellular sheet material of low density suitablefor aircraft. construction is made by forming tubes from strips of paper, linen &c. impregnated first with a thermosetting synthetic. resin which is partly cured, then with a thermoplastic. synthetic resin, such as a polyvinyl compound, assembling the tubes and bonding them together, and heating to complete the curing of the thermosetting synthetic resin. The tubes may be formed by applying the strip longitudinally on a mandrel. and overlapping. the edges, or by winding, two strips helically around a mandrel in the same or opposite directions, the overlapping. portions of the strips being sealed by pressure, aided by heat, a solvent, or a further coating of thermoplastic material. The tubes may be bonded into a block B, Fig. 6, by thermoplastic material applied along their contacting surfaces. Slices cut from such a block may be faced with sheets e, Fig. 9, of plywood, plastic or metal sheets, paper, or linen sealing. the ends of the tubes and secured by thermoplastic material or a cold-setting adhesive: A block suitable as a float may be built up by applying to one of the covering sheets e another slice of tube sections, another sheet e, and repeating the process until the desired thickness is attained. Tubes of different diameters may be used, e.g., the middle components of an assembly may be of larger diameter. Phenol-formaldehyde thermosetting. resin may be used, and the polyvinyl resin may comprise polyvinyl acetate dissolved in a mixture of tricresyl phosphate, toluene, xylene, methylated spirit, and isopropyl alcohol, with optional additions of butyl acetate and methyl ethyl ketone.
Patent GB-407591-A (GB)
Title: Improvements in oil burning stoves
IPC: F24C5/06
Filed: 1933-07-14
Abstract: 407,591. Oil cooking stoves and burners. BAUER, C., 20, Siemensstrasse, and VEREINIGTE METALLWAARENFABRIKEN AKT.-GES. VORM. HALLER & CO., 33, Friedensallee, both in Altona, Elbe, Germany. July 14, 1933, No. 20007. [Classes 75 (i) and 126.] In a stove for burning petroleum or other liquid fuel comprising a fuel pan d containing a wick e and perforated cylindrical mantles h<1>, h2, the mantles are undulated at one or more points so as to produce turbulence of the fuel vapours. The top of the inner mantle is formed with a hemispherical depression formed with air holes r and a central hole m enabling liquid boiling over from saucepans on the grating l to drain into a pan n. The mantles are attached to a surrounding cylinder h which may be provided with rails p engaging guides q on the stove to ensure the mantles being centrally seated on the pan d.
Patent GB-412047-A (GB)
Title: Improvements in stair-carpet holders
IPC: A47G27/06
Filed: 1933-07-17
Abstract: 412,047. Stair - carpet holders. HARRISON, E., 2, Lathom Street, Bury. July 17, 1933, No. 20123. [Class 52 (v).] In stair-carpet holders of the kind comprising a fixed bracket part a and a pivoted tongue b, the bracket is formed with a square or other flat-sided boss a and the hub part of the tongue has a correspondingly shaped recess, the stem part a2 of the bracket forming the pivot for the tongue and being screw-threaded and provided with a nut c, the arrangement being such that when the tongue lies across the carpet and the nut is tightened up the tongue is held against angular movement by the boss a<1> and the carpet is put under tension, while on the nut being slackened the tension of the carpet moves the recess clear of the boss freeing the tongue. The boss a<1> also engages the recess when the tongue is vertical. The bracket a is secured by a screw a<4> passing centrally through it. The rear face of the tongue is grooved to engage the pile of the carpet. The holder may be made of synthetic resin. Specification 392,800 is referred to.